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- Thu Sep 16, 2021 3:54 am
- Forum: ESP32 Arduino
- Topic: ESP32 script hanging on 'adc.readADC_SingleEnded'
- Replies: 3
- Views: 3238
Re: ESP32 script hanging on 'adc.readADC_SingleEnded'
This can be caused by not having "PullUp" resistors SCL and SDA. From 3K to 5K on each pin to +3.3 should work. I know that the ESP32 has internal PullUps, but I don't think they are active on clock and data.